Results 1 to 10 of about 6,776,803 (247)

Influence of Pressure on the Frequency Spectrum of Micro and ‎Nanoresonators on Hinged Supports [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
Eigenfrequencies of bending oscillations are determined for a resonator with rectangular cross-sections mounted on hinged supports. Consideration is given to the surface effect caused by the interaction between gas pressure and the difference in the ...
Marat A. ILGAMOV, Akim G. KHAKIMOV
doaj   +1 more source

Dynamic Analysis of a Timoshenko–Ehrenfest Single-Walled Carbon Nanotube in the Presence of Surface Effects: The Truncated Theory

open access: yesApplied Mechanics, 2023
The main objective of this paper is to study the free vibration of a Timoshenko–Ehrenfest single-walled carbon nanotube based on the nonlocal theory and taking surface effects into account.
Maria Anna De Rosa   +3 more
doaj   +1 more source

Hydrogen Storages Based on Graphene Nano-Flakes: Density Functional Theory Approach

open access: yesC, 2022
Carbon materials such as graphene, carbon nanotubes, fullerene, and graphene nanoflakes (GNFs) are used for hydrogen storage. The doping of alkali metals to these materials generally increases the accumulation density of molecular hydrogen (H2). However,
Hiroto Tachikawa
doaj   +1 more source

Shear Horizontal Surface Waves in a Layered Piezoelectric Nanostructure with Surface Effects

open access: yesMicromachines, 2022
This work aims to provide a fundamental understanding on the dispersive behaviors of shear horizontal (SH) surface waves propagating in a layered piezoelectric nanostructure consisting of an elastic substrate and a piezoelectric nanofilm by considering ...
Lele Zhang, Jing Zhao, Guoquan Nie
doaj   +1 more source

Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy

open access: yesMicromachines, 2021
Nanoporous Shape Memory Alloys (SMA) are widely used in aerospace, military industry, medical and health and other fields. More and more attention has been paid to its mechanical properties.
Chunzhi Du, Zhifan Li, Bingfei Liu
doaj   +1 more source

Structural Characteristics, Stability, and Electronic Properties of 001 Surface with Point Defects of Zinc Stannate: A First-Principle Study

open access: yesInorganics, 2022
This work presents first-principles calculations on the surface and defect impact upon zinc stannate (ZS) materials with perovskite bulk structures. The structure and electronic properties of both a perfect 001 surface and surfaces with a point defect of
Jun Li   +9 more
doaj   +1 more source

Analytic formulation of elastic field around edge dislocation adjacent to slanted free surface

open access: yesRoyal Society Open Science, 2022
Explicit and tractable formulation of the internal stress field around edge dislocations is indispensable for considering the mechanics of fine crystalline solids, because the motion of edge dislocations in a slanted direction with respect to the free ...
Hiroyuki Shima   +2 more
doaj   +1 more source

Exact solution for the vibrations of cylindrical nanoshells considering surface energy effect [PDF]

open access: yesJournal of Ultrafine Grained and Nanostructured Materials, 2015
It has been revealed that the surface stress effect plays an important role in the mechanical behavior ofstructures (such as bending, buckling and vibration) when their dimensions are on the order ofnanometer.
Hessam Rouhi   +2 more
doaj   +1 more source

Swarming Motility Without Flagellar Motor Switching by Reversal of Swimming Direction in E. coli

open access: yesFrontiers in Microbiology, 2020
In a crowded environment such as a bacterial swarm, cells frequently got jammed and came to a stop, but were able to escape the traps by backing up in their moving course with a head-to-tail change (a reversal).
Zhengyu Wu   +3 more
doaj   +1 more source

Effect of Free Surface Based on Submergence Depth of Underwater Vehicle

open access: yes한국해양공학회지, 2022
This paper presents the minimum submergence depth of an underwater vehicle that can remove the effect of free surface on the resistance of the underwater vehicle.
Taek-Geun Youn   +3 more
doaj   +1 more source

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